I promote them since 2005. Never had any problems. I noticed they payment sometimes arrive a few days earlier or later. But i don't care about a few days, if it is there at the end of the month it is ok. Most of the time when something goes wrong with a payment i notice that after 3 months when i do bookkeeping for VAT. When a payments is a few days late, that can happen. Maybe he has holiday or something. Some people get in panic of there is a 1 day delay.
And if they are out of business, that could happen to. The best times for smsmovies are over, they didn't improve anything the last years. I made my own sms payment site as alternative.
I also use this for sms movies:
http://tinyurl.com/yho69rn whitelabel from
http://www.spacash.com/?id=film
Much better and frequently updated, people can download the movie to own.